Hydrocarbon-burner.



S. M. KEKUEWA.

HYDROCARBONBURNER. APPLICATION FILED 1AN.22. 1917'. RENEWED JUNE 12.1918.

Patented Jan. 7, 1919.

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SAMUEL M. KEKUEWA, or LAI-IAINA, TERRITORY or HAWAII.

HYDROCARBON-BURNER.

Application filed January 22, 1917, Serial No. 143,711. Renewed June 12,1918.

To all whom it may concern:

Be it known that I, SAMUEL MJKEKUEWA, a citizen of the United States,residing at Lahaina, in the county of Maui, Territory of Hawaii, haveinvented certain new and useful Improvements in Hydrocarbon-Burners; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to hydrocarbon burners and more particularly toimprovements in that type of burner used for cooking stoves and in whichthe oil feeding and vapor feeding pipes are located around the burnerwhich forms of the pipes a. gas generating apparatus.

The object of this invention is to improve the construction of burnersof this type by the provision of an adjustable air feeding pipe bymeansof which cold air drawn from the atmosphere may be fed to theburner.

A further object consists in the provision of an improved form ofoilheating and vaporizing element.

A still further object consists in the combination with the burner.of'an improved form of burner cap by means of'which the flame isdistributed to better advanta e than in those burnersof this type whichave been heretofore known to me. I

' In connection with the above objects, it should be stated that I havebeen enabled by the new improved arrangement to increase the extent orpercentage of the blue flame as compared to the percentage of red flameover those burners with which I am familiar, and can secure equalresults with the decreased consumption of fuel.

With the above objects in View and such others as may hereinafter appearmy invention will now be fully set forth and described, reference beinghad to the accompanying drawings In the drawings Figure 1 is sideelevation away of the burner,

Fig. 2 is a vertical section through the burner,

Fig. 3 is a plan view,

Fig. 4 is a section on 1, and

Fig. 5 is a section on line 5-5 of Fig. 1.

Referring more particularly to the drawpartly broken line 44 of Fig.

Specification of Letters Patent.

Patented J an. 7, 191 9.

I Serial No. 239,506.

ings,q1 indicates the oil pipe and standard which rises from the usualpump controlled oil tank or reservoir (not shown). The upper end of thestandard 1 receives a threaded base 2 from which the branch pipes 3 riseand extend diametrically upward in opposite directions and terminate inan annular vaporizing chamber 4. At equal distances from the branchpipes 3, the annular chamber 4 supports the arms of the U-shaped vaporor gas tube 5 which supports, between its arms, the burner 6, the latterbeing adapted to project its flames centrally upward between the branchpipes 3 and the arms of the vapor tube 5, so that the flame issuesthrough the center of the annular chamber 4. Surrounding the annularchamber 4, and preferably forming an integral part of the casting is theupturned flame cup 7 which incloses the heat-giving flame of the burner.1

Extending downwardly through the openng in the center of the annularchamber 4 1s ayertical burner tube 8 which is supported against lateralmovement by the annular chamber 4, and is bifurcated at its lower end,as at 9 to seat over the face of 'the U-shaped gas tube 5 on oppositesides of the burner 6, so that it inclosesthe latter. The lower endof'the tube 8 is open and is adapted to feed air therethrough to bemlxed with the flame from, the burner 6 which eventually issues throughthe top of the tube 8, and is deflected as will hereinafter appear. Oneof the bifurcations at the lower end of the tube 8 is extended into theright-angularly projected armlO. Said arm 10 extends horizontally intoengagement with the curved cam slot 11 of an adjusting plate 12 which iscarried upon the inner end of a threaded stem 13. Said stem 13 isthreaded into a plate 14 mounted upon a fixed end of the burner, in thepresent instance, the usual alcohol cup 15 which is used to start theburner. By means of the stem 13 and the adjusting plate 12, the tube 8may be raised and lowered by reason of the coaction of the arm 10 in theslot 11, so as to vary the degree of the opening in the ottom of thetube 8, as the latter is raised or lowered in its straddled positionover the tube 5. Thus, the amount of fresh air which reaches the burner6 can be readily regulated. Mounted upon the top of the annular chamber4 is a closely wound coil or body of wire, of copper or other suitablyconductive material which serves as a heat retaining body for theheating of the annular chamber 4:, whereby the vaporizing of the fuel inthe chamber 4: is maintained to the most advantageous degree. The flamewhich rises in the tube 8 from the burner 6 strikes against the burnercap 16' which is a cylindrical structure having its upper end closed byan arched plate or diaphragm, and has its peripheral portion, adjacentthe lower end provided with a number of annular rings of elongatedperforations 17 through which the flames issue after they have impingedagainst the top of the cap 16 and turned downwardly along its sides. I

In operation, the above burner is started in the same manner as thoseburners of this type now in use, by the ignition of alcohol or otherlight fuel in the cup 15 after the fuel in the reservoir has been pumpedinto the burner. As soon as the burner has been ignited, so that fuel isregularly vaporized in the chamber 4, and passing out of the burner in aflame is spread by the burner cap 16 as the flame turns downwardy due toits deflection by the cap 16, it heats the coil 18, and thelatterbecoming heated to a high degree in turn maintains the annularchamber 4: at such-a temperature as will properly vaporize the fuelwithin the chamber. The deflection of the flame by the cap 16 causes thelatter to pass into the burner cup 7 through-the perforations 17 theflames issuing as a series of almost wholly blue jets.

'When it is desired to regulate the flame,

' the tube 8 is lowered or elevated by rotation of the stem 13, so thatthe arm 10 is raised or lowered by its operation in the cam slot 11. Inthis manner, a perfect mixture of'air and vapor can be accomplished, thetube 8 who a! this potent my ha becoming, in fact a combination tubefrom which the flames are issued to the distributing element 16.-

From the foregoing it will be apparent that I have provided a highlyimproved form of burner by means of which a proper regulation of theburner flames may be secured, and which, at the same time is notcomplicated or difficult to manufacture.

What I claim as my invention is 1. A hydrocarbon burner comprising incombination, a vaporizing chamber, fuel feeding pipes and vapor pipesarranged around the vaporizing chamber, a burner disposed centrally ofthe fuel feeding and vapor pipes, an adjustable tube surrounding theburner and rising centrally above the vaporizing chamber, means toadjust the tube vertically, a heating element supported by the chamberaround the tube, and a spreaded cap inclosing the heating element andthe upper end of the tube.

2. A hydrocarbon burner comprising in combination, a vaporizing chamber,fuel feeding pipes and vapor pipes arranged around the vaporizingchamber, a burner disposed centrally of the fuel feeding and vaporpipes, an adjustable tube surrounding the burner and rising centrallyabove the vaporizing chamber, a coiled metal heating element supportedby the chamber around the tube, and a spreaded cap inclosing the heatingelement and the upper end of the tube.

In testimony whereof, I affix my signature, in the presence of twowitnesses.

, SAMUEL M. KEKUEWA.

Witnesses:

J. M. LEE, G. G. SEoNe.

9311, y essing the Commissioner of Patents,

Washington, 0. j

